Biktrix Juggernaut Hub Duo 750W 52V/17Ah Step-Over Fat Tire Electric Bicycle with 5 Levels of Pedal Assist (PAS) and Thumb Throttle 
New stock - Latest model. Limited Supply.
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Do you crave a powerful electric bike that can tackle hills and headwinds without struggle? Well, you’ve come to the right place.
The Duo series bikes feature dual batteries that allow you to go as far as you desire - and never worry about range.
Features of the Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike
- Powerful and responsive 750W Bafang rear hub motor
- 80Nm of torque - For easy to moderate hills
- Dual integrated battery system
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5 Levels of Pedal Assist (PAS) to find just the right amount of help from the motor
- On-demand throttle makes pedaling optional
- Cadence+torque sensor makes Pedal Assist smooth and intuitive
- Fat Tires - Whether you're up against sand, mud or snow, these tires will handle it without breaking a sweat. The Hub Duo is ready for all-season, all-terrain riding
- Shimano 9-speed (gears) transmission
- Big and easy-to-read LCD display
- Integrated front light - Never ride blind again. Our bikes come with front lights integrated with the main battery of the bike
- Fenders and rear rack included for FREE
- Up to 330 lbs. load capacity (depends on the fork you choose)
Feel free to contact us about accessories and other upgrades - (upgraded lights, suspension seat post, saddlebags, mirror, handlebars).
The Hub Duo Step-Over Fat Tire eBike features our dual integrated battery technology, and an RST Guide suspension fork.
Hills become something of a novelty with the new Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire electric bicycle.
Powerful 750W motor
The powerful hub-drive motor features 750 watts of power and 80Nm of torque. This allows you to span cities, climb hills, and explore places you want to go with ease.

Hydraulic disc brakes and fat tires
The hydraulic disc brakes supply firm, safe and smooth stopping power, and get extra traction from the 4" Fat Tires. Choose 27.5×3 MTB wheels for less drag and a great commute on and off-road.

From climbing hills to holding maximum speed on the flats, the Shimano 9-speed drivetrain has you covered.

LCD display
The LCD Display shows you all kinds of important information about your ride including speed, battery life, range, odometer, pedal assist level, and more.

RST guide suspension fork
The RST Guide fork provides 80mm of travel with pre-load, lockout, and rebound adjustability.

Integrated headlight
A bright LED will light your way when the sun goes down. It's powered by the bike's battery and can be turned on/off with a button on the handlebar control pad.

Rear Light
The bright rear light helps you ride with more confidence at night.

Sturdy storage rack for convenient carrying capacity.

The Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike is perfect for commuting on the street or ripping up hills off-road. And more ground clearance than any other Bafang BBSHD-powered eBike. Simply put, it’s a ton of fun.

Get all the power you can handle, together with exceptional build quality and 85Nm of torque.
Three ways to ride the Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike
- Pedal only (with no help from the motor)
- Pedal Assist (with 5 levels of assistance to choose from)
- Throttle only (effortless like a motorcycle)
The Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike can be used as a normal bike where the rider provides all the power, or you can use just the throttle and let the bike do all of the work. There is also an in-between option, Pedal Assist, where the rider pedals and the motor provides a great boost at the same time. You can choose the level that is right for your type of riding. The Levels of Pedal Assist allow for increased ride efficiency, resulting in less strain on your knees while riding. It makes riding fun and effortless.
Specifications of the Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike
MOTOR | 750W REAR HUB | |
FRAME |
6061 ALUMINUM
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|
FORK | RST GUIDE, 80MM TRAVEL, PRE-LOAD ADJUSTABLE, AND LOCKOUT | |
HEADSET | THREADLESS 1-1/8 1-1/2 TAPERED (18.5" SO / 18.5" ST/17" ST)/ THREADLESS 1-1/2" STRAIGHT (ST 20) | |
SHIFTER REAR |
SHIMANO ALTUS 9-SPEED TRIGGER*
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|
REAR DERAILLEUR | SHIMANO ALTUS 9 SPEED* | |
CASSETTE | SHIMANO 11-34T | |
CHAIN | KMC E9S | |
CRANK SET | 44T CHAINRING W/ 180MM ARMS | |
BOTTOM BRACKET | SQUARE TAPER W/ INTEGRATED TORQUE SENSOR | |
FRONT HUB | 135MM 36H | |
FRONT AXLE/SKEWER | 5MM QR | |
REAR HUB | MOTOR | |
REAR AXLE/SKEWER | BOLT-ON | |
RIMS | BLACK, 36H | |
TIRES |
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|
BRAKES | BIKTRIX DUAL PISTON HYDRAULIC BRAKES W/180MM ROTORS | |
BRAKE LEVERS |
BIKTRIX ADJUSTABLE
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|
STEM | ADJUSTABLE STEM | |
HANDLEBAR |
700MM WIDE, 31.8MM CLAMP
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|
SEAT POST | 28.6MM* | |
SEAT POST CLAMP | QR | |
GRIPS | SLIDE-ON | |
SADDLE | BIKTRIX COMFY SADDLE | |
DISPLAY | 500C | |
SEAT POST CLAMP | 36.4MM QR* | |
LIGHTS |
INTEGRATED HEADLIGHT, TAILLIGHT
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|
THROTTLE | THUMB THROTTLE | |
ASSIST LEVELS | 0-5 (0-3, 0-9) | |
ASSIST TYPE | TORQUE | |
OTHER | FRONT AND REAR FENDERS, REAR RACK, KICKSTAND |
17" STEP-THRU
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18.5" STEP-OVER
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18.5" STEP-THRU
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20" TIRE STEP-THRU | ||||||
MM | INCHES | MM | INCHES | MM | INCHES | MM | INCHES | ||
1 | EFFECTIVE TOP TUBE LENGTH | 590 | 23.2 | 560 | 22 | 580 | 22.8 | 620 | 24.4 |
2 | SEAT TUBE LENGTH (CLASSIC BIKE SIZE) | 420 | 16.5 | 470 | 18.5 | 470 | 18.5 | 420 | 16.5 |
3 | REACH | 440 | 17.3 | 460 | 18.1 | 420 | 16.5 | 540 | 21.3 |
4 | STACK | 640 | 25.2 | 600 | 23.6 | 670 | 26.4 | 600 | 23.6 |
5 | CHAINSTAY LENGTH | 490 | 19.3 | 510 | 20.1 | 520 | 20.5 | 430 | 16.9 |
6 | STANDOVER HEIGHT | 450 | 17.7 | 705 | 27.8 | 460 | 18.1 | 420 | 16.5 |
7 | HEAD ANGLE | 66 DEGREES | 70 DEGREES | 66 DEGREES | 67 DEGREES | ||||
8 | SEAT ANGLE | 72 DEGREES | 75 DEGREES | 72 DEGREES | 73 DEGREES | ||||
9 | HEAD TUBE LENGTH | 180 | 7.1 | 180 | 7.1 | 180 | 7.1 | 190 | 7.5 |
10 | FORK LENGTH | 450 | 17.7 | 520 | 20.5 | 530 | 20.9 | 430 | 16.9 |
11 | FRONT CENTER | 730 | 28.7 | 720 | 28.3 | 730 | 28.7 | 780 | 30.7 |
12 | BB (BOTTOM BRACKET) DROP | 60 | 2.4 | 60 | 2.4 | 60 | 2.4 | 30 | 1.2 |
13 | FORK OFFSET | 30 | 1.2 | 40 | 1.6 | 30 | 1.2 | 30 | 1.2 |
14 | WHEELBASE | 1200 | 47.2 | 1230 | 48.4 | 1220 | 48 | 1220 | 48 |
15 | TOTAL LENGTH | 1900 | 74.8 | 1970 | 77.6 | 1960 | 77.2 | 1850 | 72.8 |
16 | MAX SEAT HEIGHT | 970 | 38.2 | 1020 | 40.2 | 1030 | 40.6 | 950 | 37.4 |
17 | MIN SEAT HEIGHT | 800 | 31.5 | 860 | 33.9 | 870 | 34.3 | 800 | 31.5 |
18 | HANDLEBAR HEIGHT | 1120 | 44.1 | 1080 | 42.5 | 1150 | 45.3 | 1080 | 42.5 |
19 | WEIGHT (WITHOUT BATTERY) | 28.1 KG | 61.9 LB | 28.9 KG | 63.7 LB | 29 KG | 63.9 LB | N/A | |
Videos of the Biktrix Juggernaut Hub Duo 750W 52V Step-Over Fat Tire eBike
